Title :
Interframe differential coding of line spectrum frequencies
Author :
Erzin, E. ; Cetin, A. Enis
Author_Institution :
Dept. of Electr. & Electron. Eng., Bilkent Univ., Ankara
fDate :
4/1/1994 12:00:00 AM
Abstract :
Line spectrum frequencies (LSF´s) uniquely represent the linear predictive coding (LPC) filter of a speech frame. In many vocoders LSF´s are used to encode the LPC parameters. In this paper, an interframe differential coding scheme is presented for the LSF´s. The LSF´s of the current speech frame are predicted by using both the LSF´s of the previous frame and some of the LSF´s of the current frame. Then, the difference resulting from prediction is quantized
Keywords :
linear predictive coding; speech coding; vocoders; LPC filter; LPC parameters; line spectrum frequencies; linear predictive coding; quantization; speech frame; vocoders; Distortion measurement; Frequency; Linear predictive coding; Nonlinear filters; Poles and zeros; Polynomials; Signal processing; Speech coding; Testing; Vocoders;
Journal_Title :
Speech and Audio Processing, IEEE Transactions on
